Stamping or tablet-making machine.



- No. 808,406. PATENTED DEC. 26, 1905.

G. SOHWARZBBGK.

STAMPING 0R TABLET MAKING MACHINE.

APPLICATION FILED APB-.3, 1905.

UNITED STATES PATENT oirrron.

STAMPING OR TABLET-MAKING MACHINE.

Specification of Letters Patent. I

Patented Dec. 26, 1905.

Application filed April 3, 1905. Serial No. 253,684.

To all whom it may concern.-

Be it known that I, GEORGE ScHwARzBEoK, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Stamping orTablet-Making Machines, of which the following is a specification.

This invention relates to improvements in machines of the class or typedisclosed in Letters Patent No. 692,530, issued to William Kraemer onthe 4th day of February, 1902- that is, such machines employed forforming plastic material or comminuted particles into variously shapedpiecessuch as tablets, disks,spheres, buttons, small cakes,and likearticles; and it consists in certain peculiarities of the construction,novel arrangement, and operation of the various parts thereof, as willbe hereinafter more fully set forth and specifically claimed.

The object of the invention is to provide a priming or powderingattachment for ma chines of the above-named type, and more especiallyfor a machine constructed according to the above-named patent, but whichmay be applied to and operated in connection with other machines of thesame general character.

Other objects and advantages of the invention will be disclosed in thesubjoined descriptionand explanation.

In order to enable others skilled in the art to which my inventionpertains to make and use the same, I will now proceed to describe it,referring to the accompanying drawings, in which Figure 1 is a plan Viewof the matrix-plate and feed-box of a stamping or tablet-making machine,showing my improved attachment for priming or powdering matrices andplungers therefor to prevent the material adhering thereto. Fig. 2 is adetached perspective view of the powder-box, showing a portion thereofbroken away to illustrate its perforated bottom. Fig. 3 is a View inelevation of one side of the matrix-plate and one end of the feed-boxes,showing the means for vibrating the powder-box and operating theconveyer in the feed-boxes. in elevation of one end of the matrix-plateand of the face of the feed-boxes, showing my vibratory powder-box andits connections in place thereon. Fig. 5 is a fragmental perspectiveview of the inner portion of the rackbar used to vibrate the powder-box;and Fig.

Fig. 4c is a view 6 is a fragmental plan view of a portion of thefeed-boxes, showing the apertured horizontal extension thereon.

Like numerals of reference refer to corresponding parts throughout thedifferent views of the drawings.

As my invention chiefly relates to means for priming or powdering thematrices and plungers, I have shown only enough of the other parts ofthe machine to furnish a clear understanding of the construction andoperation of my improvements.

The reference-numeral 10 indicates the matrix-plate, which may beprovided with one or more openings or matrices 11 for the reception andoperation of the ejector plungers and dies (not shown) used forcompressing the material and for ejecting the same. This plate may behorizontally mounted on the machine-frame and is usually provided at oneof its ends with an inclined chute 12 for the discharge of the tabletsor formed particles. Each side of the plate 10 is provided with alongitudinal race 13 for the reception and travel of thedownwardly-extending flanges or projections 14, which are locatedtransversely on the lower portion of the feed-boxes 15, which may besuitably supplied with the material from which the tablets and the likeare formed.

As shown in the drawings, the feed-boxes 15 are spaced apart at theirupper portions, but are joined and communicate with one another at theirlower portions. Horizontally journaled in the lower portion of thefeedboxes and extending across the plate 10 is a shaft 16, which hasthereon a spiral conveyer 17, used for stirring the material and toforce it through the opening in the bottom of the feed-boxes, so as todeliver it to the matrix or matrices of the matrix-plate. On one end ofthe shaft 16 is mounted a pinion 18 to engage the teeth 19 of a slottedrack-bar 20, which is loosely secured at one of its ends to a stationarypivot. On one side the feedboxes 15 are provided with a horizontalapertured extension 21, on which the powder-box 22 normally rests and isadapted to vibrate. As is clearly shown in Fig. 2 of the drawings, thepowder-box 22 is provided with a perforated bottom 23, through which thepowder or priming material is sifted, and has an upwardly-extendingtubular portion 24:, to which a flexible tube 25 is connected at one ofits ends, the other end of said tube being provided or communicatingwith a hopper 26 for the powder or priming material, which hopper may besuitably supported on the machine or otherwise. Extending longitudinallyfrom one end of the box 22 is a bar 27, which is fulcrumed near its freeend to one of the feed-boxes and has the upper portion of said endbeveled, as at 28, so as to engage the teeth 19 of the rack-bar 20,which operates the conveyer in the feed-boxes as well as gives vibratorymotion to the bar 27 and powder-box 22 thereon.

From the foregoing and by reference to the drawings it will be readilyunderstood and clearly seen that the feed-boxes 15, carrying thepowder-box 22, may be reciprocated so as to pass over the matrix ormatrices 11 by any suitable means, but usually through theinstrumentality of bars or rods 29, connected at one of their ends tosaid boxes and at their other ends to suitable driving mechanism. In theback-and-forth movement of the feedboxes it is apparent that as thebeveled end 28 of the bar 27 engages the teeth of the rack-bar 20 avibratory motion will be imparted through the first-named bar to thepowder-box, thus sifting the powder therefrom, so as to prime or powderthe matrix or opening 11, as well as the plunger or die operatingtherein, so as to prevent the material from which the tablets and thelike are formed adhering thereto.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a stamping and tablet-making ma chine, the combination With amatrix-plate, of a feed-box movably mounted thereon, a perforatedpowder-box carried by said feedbox, a bar connected at one of'its endsto the powder-box and fulcrumed on the feed-box, and a rack-bar engagingthe fulcrumed bar, substantially as described.

2. In a stamping and tablet-making machine, the combination with amatrix-plate, of a feed-box movably mounted thereon and having anapertured horizontal extension on one of its sides, a conveyer-shaftjournaled in the feed-box, a pinion on one end of said shaft, aperforated powder-box mounted on said extension of the feed-box, a barconnected at one of its ends to the powder-box and fulcrumed on thefeed-box, and a rack-bar adapted to engage the fulcrumed bar and saidpinion, substantially as described.

GEORGE SCHWARZBECK.

Witnesses:

CHAS. C. TILLMAN, A. G-UsrAFsoN.

